So we have the equation:
\(\frac{1}{4} (4x+15)=24\)
So we first must multiply both sides by 4 in order to get rid of the \(\frac{1}{4}\) on the left side:
\((4x+15)=96\)
Then we need to subtract 15 on both sides in order to get the x term by itself on the left side:
\(4x=81\)
And then to completely solve for x, we need to divide both sides by 4:
\(x=20.25\)